Heating Boilers

Wood boilers are the most traditional and economical form of heating. They are sometimes referred to as solid fuel boilers, as they are designed for firing with wood, coal or briquettes.

Heating boilers can be manufactured from steel or cast iron. A steel heating boiler has a long flue gas path where heat from the combustion process is transferred to the heating system, thereby providing a high efficiency coefficient and saving fuel. Cast iron heating boilers will have a service life many times longer than steel heating boilers, but in steel boilers the fuel burns with higher efficiency. A steel wood boiler will be easier to clean, thanks to its straight boiler walls.

An important factor when choosing a wood boiler is also its construction – how large the boiler capacity is, what the permissible log length is, how the heat exchangers are arranged, etc. The efficiency of the heating boiler will depend on these parameters. For practically any wood heating boiler, it is possible to install a pellet burner in the future, thereby obtaining a practically automated form of heating (combined heating boiler).

Combined heating boilers are designed for firing with firewood, wood chip briquettes and coal, or in automatic mode using 6–8 mm wood chip pellets. Depending on the boiler model, when firing in manual mode the burner will need to be dismantled, or it may be possible to leave it connected to the boiler. Heating boilers can be made from steel or cast iron (see explanation under solid fuel heating boilers). If you have additionally purchased replacement boiler doors on which a pellet burner is installed, when firing in manual mode it will be possible to dismantle the burner together with the door and install the replacement boiler door.

By installing a pellet burner, you will be able to give up constant firing and boiler monitoring – simply set the heating water or room temperature, and the pellet burner will take care of the rest.